TY - GEN
T1 - An efficient power management mechanism for WiFi-based handheld systems
AU - Min, Jung Hi
AU - Cha, Hojung
AU - Srini, Vason P.
PY - 2006/1/1
Y1 - 2006/1/1
N2 - We propose a system level dynamic power management scheme that considers interaction between CPU and WNIC, and types of workload to reduce energy consumption of handheld systems. The proposed scheme determines the clock speed (voltage) for the CPU and the power mode for WNIC according to the workload type. This mechanism works based on two observations: the consumed power of WNIC is reduced when the clock speed of CPU is increased, and the power modes of WNIC and the clock speed of CPU have different values based on the kind of workload. Experimental results show that on the average the proposed scheme reduces energy consumption by 8% for BE (Best Effort) workload, 3% for CBR (Constant Bit Rate) workload, and 16% for interactive when compared to DVFS (Dynamic Voltage and Frequency Scaling) for CPU and DPM (Dynamic Power Management) for WNIC.
AB - We propose a system level dynamic power management scheme that considers interaction between CPU and WNIC, and types of workload to reduce energy consumption of handheld systems. The proposed scheme determines the clock speed (voltage) for the CPU and the power mode for WNIC according to the workload type. This mechanism works based on two observations: the consumed power of WNIC is reduced when the clock speed of CPU is increased, and the power modes of WNIC and the clock speed of CPU have different values based on the kind of workload. Experimental results show that on the average the proposed scheme reduces energy consumption by 8% for BE (Best Effort) workload, 3% for CBR (Constant Bit Rate) workload, and 16% for interactive when compared to DVFS (Dynamic Voltage and Frequency Scaling) for CPU and DPM (Dynamic Power Management) for WNIC.
UR - http://www.scopus.com/inward/record.url?scp=42749100635&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=42749100635&partnerID=8YFLogxK
U2 - 10.1109/WiCOM.2006.409
DO - 10.1109/WiCOM.2006.409
M3 - Conference contribution
SN - 1424405173
SN - 9781424405176
T3 - 2006 International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2006
BT - 2006 International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2006
PB - IEEE Computer Society
T2 - 2006 International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2006
Y2 - 22 September 2006 through 29 September 2006
ER -
